Pontiac 2003 Bonneville Owner's Manual page 25

To unlatch the belt, just push the button on the buckle.
The belt should go back out of the way.
Safety Belt
Use
During Pregnancy
Safety belts work for everyone, including pregnant
women. Like all occupants, they are more likely to be
seriously injured if they don't wear safety belts.
Before you close the door, be sure the belt is out of the
way. If you slam the door on it, you can damage
both the belt and your vehicle.
A pregnant woman should wear a lap-shoulder belt, and
the lap portion should be worn as low as possible,
below the rounding, throughout the pregnancy.
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